SendCheck — EVM address verification (x402) for Grok
org.pennyforge.api/sendcheck
Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.
client:Grok
transport:streamable-http
tools:3
Install SendCheck — EVM address verification (x402) in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"sendcheck": {
"type": "http",
"url": "https://api.pennyforge.org/mcp"
}
}
}Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs